Definition of microtrichium in English:

microtrichium

Pronunciation /ˌmʌɪkrə(ʊ)ˈtrɪkɪəm/

noun

Entomology
  • Any of the very fine hairlike cuticular processes found in many insects and certain other invertebrates.

Origin

1930s. From micro- + ancient Greek τριχιον from τριχ-, θρίξ hair + -ιον, diminutive suffix.